The packed string libraries have the benefit over arrays of Word8 or
Char types, in that they provide the usual list-like operations.

Some interesting results for FastPackedString are documented
here. In particular,
it compares FPS against the existing PackedString and [Char] functions,
and is used successfully with 1 gigabyte strings.

2 Example

Pete Chown asked the question:

I want to read a text file. As an example, let's use
/usr/share/dict/words and try to print out the last line of the file.